Firecracker for humans.

Boot headless Linux microVMs in <1s - for production services, API-driven VMs, background jobs, AI agents, and more.

Read 2025 wrap-up Documentation

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Slicer for Work

Deploy Firecracker microVMs via YAML or API

Production-ready infrastructure for modern workloads. Declarative configs, powerful APIs, and instant scaling for everything from AI agents to Kubernetes clusters.

API Automation

Run background jobs, code workspaces, bots, and AI agents via REST API or Go SDK. Share secrets securely from the host.

Ubuntu & Rocky Linux

Boot a Debian- or RHEL-like OS for customer support and product testing.

Kernel-level isolation

microVMs with the ease of containers, but a full guest Kernel, OS and systemd. Run untrusted code, customer workloads, or AI agents safely.

Autoscaling Kubernetes nodes

Support customers: one of the fastest ways to spin up Kubernetes clusters with node scaling and termination .

Ephemeral Jenkins CI runners

Spin up isolated CI/CD runners on-demand. Each build runs in a fresh microVM with kernel-level isolation, then tears down automatically when done. Learn more.

# Run headless tasks and workloads 
# like containers

$ slicer vm new \
    --userdata-file setup_opencode.sh
$ slicer vm cp ./pr.tgz vm-1:/home/ubuntu/
$ slicer vm exec vm-1 \
    -- tar -xcf /home/ubuntu/pr.tgz
$ slicer vm exec vm-1 opencode \
    -m "Review this code and quit when done" \
    >> REVIEW.md

Slicer at Home

The fastest way to learn & experiment with Firecracker

Transform your mini PC, Raspberry Pi, or home server into a powerful private cloud. Experiment with microVMs, Kubernetes, and AI agents in an isolated environment that just works.

Lightning Fast

Slicer makes VMs as easy to use as containers and you'll be up and running in no time compared to Proxmox, VirtualBox, or QEMU.

Playgrounds on-demand

Learn and experiment in microVMs with new software whilst keeping your own machine pristine.

All-inclusive package

Get unlimited access to Slicer, K3sup Pro & OpenFaaS Edge in a single monthly subscription.

Home lab or bare-metal cloud

Run applications, databases, and other services on your own hardware or bare-metal cloud at a fraction of the cost of AWS.

Router/firewall & ad blocker

Build a Linux router/firewall appliance or run an ad blocker. Use standard Linux tools you already know.

# Kubernetes in seconds, not 30 minutes.
# Tear down in a few seconds.

$ slicer new k3s --count=3 > k3s.yaml
$ slicer vm list --json > devices.json

$ k3sup-pro plan --user ubuntu
$ k3sup-pro get-config --merge \
    --local-path ~/.kube/config \
    --context slicer

$ kubectx slicer
$ kubectl get node
NAME    STATUS    AGE   VERSION
k3s-1   Ready     53s   v1.33.6+k3s1
k3s-2   Ready     56s   v1.33.6+k3s1
k3s-3   Ready     59s   v1.33.6+k3s1

Run slicer activate to join our Discord server to talk to like-minded self-hosters, experimenters, and home-labbers.

End-to-End Firecracker in your own product within a few hours

You're not just buying software – you're skipping months of painful low-level integration work

Slicer turns the very raw Firecracker technology into a production-ready product that's as easy to use as containers or AWS EC2.

Included in the package: supported Kernels and base images, a REST API, powerful guest agent, Go SDK, and built-in firewall support.

Slicer microVMs: Battle-tested in production

Slicer's code has been used to run millions of GitHub Actions CI jobs for CNCF and various other LinuxFoundation projects.

Since 2022 our team at OpenFaaS Ltd has used Slicer every day to set up labs for product development, load-testing, and for delivering fast customer support.

Our own long-term production workloads from Kubernetes clusters, to our crucial code review bot, to APIs all run on bare-metal powered by Slicer.

New to microVMs?

microVMs explained in 3 videos

What's Firecracker or a microVM?

Learn about Firecracker microVMs and how they differ from traditional VMs and containers.

Got questions about Slicer?

Book a call with our team to get your questions answered.

Talk to Our Team